Which of the Following Is the Best Description of the Cause

Multiple Choice

Which of the following is the best description of the cause of multiple sclerosis (MS) ?

A) gradual death of brain cells due to calcium influx
B) myelin sheath lesions impair normal coordination of impulses
C) synaptic uptake of dopamine is inhibited
D) degeneration of dopamine-releasing neurons in the brain
E) excessive excitatory signals from the motor cortex